21086526370 has 64 divisors (see below), whose sum is σ = 47024441856. Its totient is φ = 6629299200.

The previous prime is 21086526367. The next prime is 21086526379. The reversal of 21086526370 is 7362568012.

It is not an unprimeable number, because it can be changed into a prime (21086526379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 60682 + ... + 214138.

It is an arithmetic number, because the mean of its divisors is an integer number (734756904).

Almost surely, 2^21086526370 is an apocalyptic number.

21086526370 is an abundant number, since it is smaller than the sum of its proper divisors (25937915486).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21086526370 is a wasteful number, since it uses less digits than its factorization.

21086526370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153635.

The product of its (nonzero) digits is 120960, while the sum is 40.

The spelling of 21086526370 in words is "twenty-one billion, eighty-six million, five hundred twenty-six thousand, three hundred seventy".